Paper
... (NMR) provides an important information regarding the peculiarities of the magnetic states and gives an opportunity to analyze the local charge distribution in MV centers. The lack of the theory of NMR spectral distributions in systems containing transition metal MV clusters in magnets essentially c ...
... (NMR) provides an important information regarding the peculiarities of the magnetic states and gives an opportunity to analyze the local charge distribution in MV centers. The lack of the theory of NMR spectral distributions in systems containing transition metal MV clusters in magnets essentially c ...
Neutrons and new materials - Institut Laue
... used, and sometimes one type of atom is replaced by its isotope – chemically identical, but with a different nucleus and different neutron-scattering power – this difference then gives information specific to that atom. So-called inelastic scattering is a little more complicated. Here the change in ...
... used, and sometimes one type of atom is replaced by its isotope – chemically identical, but with a different nucleus and different neutron-scattering power – this difference then gives information specific to that atom. So-called inelastic scattering is a little more complicated. Here the change in ...
Hanle effect and electron spin polarization in temperature Linköping University Post Print
... split-coil magnet and the direction of the magnetic field was oriented along the sample surface. Both optical excitation and detection were carried out along the direction perpendicular to the sample surface in a backscattering geometry. PL polarization was resolved by the use of either a rotatable ...
... split-coil magnet and the direction of the magnetic field was oriented along the sample surface. Both optical excitation and detection were carried out along the direction perpendicular to the sample surface in a backscattering geometry. PL polarization was resolved by the use of either a rotatable ...
Crystal Structure Tutorial
... crystal (a single molecule of iron in the solid state) has the chemical formula Fe(s). This does neither means nor implies that a single molecule of iron in the solid state has only one atom. The same is true for materials such as table salt, sodium chloride. The formula is NaCl(s), this means that ...
... crystal (a single molecule of iron in the solid state) has the chemical formula Fe(s). This does neither means nor implies that a single molecule of iron in the solid state has only one atom. The same is true for materials such as table salt, sodium chloride. The formula is NaCl(s), this means that ...
Relativistic Néel-Order Fields Induced by Electrical Current in
... the development of FM spintronics, very large (∼100%) ...
... the development of FM spintronics, very large (∼100%) ...
Geometrical frustration
In condensed matter physics, the term geometrical frustration (or in short: frustration) refers to a phenomenon, where atoms tend to stick to non-trivial positions or where, on a regular crystal lattice, conflicting inter-atomic forces (each one favoring rather simple, but different structures) lead to quite complex structures. As a consequence of the frustration in the geometry or in the forces, a plenitude of distinct ground states may result at zero temperature, and usual thermal ordering may be suppressed at higher temperatures. Much studied examples are amorphous materials, glasses, or dilute magnets.The term frustration, in the context of magnetic systems, has been introduced by Gerard Toulouse (1977). Indeed, frustrated magnetic systems had been studied even before. Early work includes a study of the Ising model on a triangular lattice with nearest-neighbor spins coupled antiferromagnetically, by G. H. Wannier, published in 1950. Related features occur in magnets with competing interactions, where both ferro- as well as antiferromagnetic couplings between pairs of spins or magnetic moments are present, with the type of interaction depending on the separation distance of the spins. In that case commensurability, such as helical spin arrangements may result, as had been discussed originally, especially, by A. Yoshimori, T. A. Kaplan, R. J. Elliott, and others, starting in 1959, to describe experimental findings on rare-earth metals. A renewed interest in such spin systems with frustrated or competing interactions arose about two decades later, beginning in the 70s of the 20th century, in the context of spin glasses and spatially modulated magnetic superstructures. In spin glasses, frustration is augmented by stochastic disorder in the interactions, as may occur, experimentally, in non-stoichiometric magnetic alloys. Carefully analyzed spin models with frustration include the Sherrington-Kirkpatrick model, describing spin glasses, and the ANNNI model, describing commensurability magnetic superstructures.